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Mass Timber
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Glulam

Glue laminated timber has almost the same load bearing capacity as steel, but a far lower weight and excellent fire resistance due to its charring characteristics. When used in heavy timber construction, Glulam ensures high earthquake resistance and excellent resistance to aggressive substances. Many different 'lay-ups' are possible, arranging higher strength 2x laminations near the top and bottom of beams where the stresses are highest to increase the beams capacity.

Glulam allows a high degree of prefabrication, and long structural spans where necessary - but is equally effective for shorter spans. Its thermal properties help prevent cold bridging.

Glulam beams laid on their flat and used as floor or roof panels are known as GLT panels - see Glue-Laminated Timber Panels.

Materials
SPF (Spruce-Pine-Fir), Douglas Fir, Alaskan Cedar, many other species.
Carbon
1640kg CO2 sequestered per tonne
Cross Section
Up to 400mm (16") wide, or greater with secondary lamination.
Up to 2.0m (6.5 ft) deep, or greater with secondary lamination.
Length
Only limited by shipping constraints
Finishes
Planed, Sanded, Factory Sealed
Profiles
Tight radii, double curvature, and free forms achievable